Covers from courses I enjoy playing (always buy after not before), if the course is just ok, then maybe a ballmark, if it’s trash then a pencil or scorecards.

The only thing that I would consider that I collect religiously is I always grab an extra scorecard from every course I play. Some folks do pencils, etc.. it's scorecards for me.

Pin Flags and pencils from top golf courses, have a bag full of pencils that I use during tournament play, Oak Hill is my gamer at the moment. if only I could find an Augusta National one.

Ping flags from top courses I have played or events I have been to. have about 25 of them up on the wall in the man cave

Visors, Polos/T Shirts, Headcovers